<template>
  <div class="login">
    <div class="nav" >
      <div class="login-nav-logo"></div>
      <div class="login-input-suffix" >
        <el-input
          placeholder="请输入用户名"
          prefix-icon="el-icon-user-login"
          v-model="username">
        </el-input>
      </div>
      <div class="login-input-suffix">
        <el-input
          placeholder="请输入密码"
		  show-password
          prefix-icon="el-icon-pwd-login"
          v-model="password">
        </el-input>
      </div>

      <!-- <div class="login-input-suffix yzm">
        <el-input
          placeholder="请输入验证码"
          prefix-icon="el-icon-yzm-login"
          v-model="check">
        </el-input>
          <img src="@/assets/img/logo.png" >
          <div class="clear"></div>
      </div> -->
      <button class="login-button" type="button" @click='login'>登录</button>
      <div class="login-input-suffix">
        <div class="forget">忘记密码</div>
      </div>
    </div>
      <canvas id="canvas"></canvas>
</div>
</template>

<script>
	import Global from '@/components/Global.vue'
export default {
  data() {
    return {
      username: '',
      password: '',
      check: ''
    }
  },
  mounted() {
    this.init();
  },
  methods:{
    login(){
		var self = this;
	
      if(this.username == ""){
        this.open('用户名不能为空');
        return;
      }
      if(this.password == ""){
        this.open('密码不能为空');
        return;
      }
      // if(this.check == ""){
      //   this.open('验证码不能为空');
      //   return;
      // }
	  $.ajax({
	  	url: Global.serverIp + 'authorization/oauth/token',
	  	data: {
			"grant_type":"password",
			"client_secret":"test_secret",
			"client_id":"test_client",
	  		"username": self.username,
	  		"password": self.password
	  	},
		contentType: 'application/x-www-form-urlencoded',
		beforeSend : function(request) {
		request.setRequestHeader("Authorization", 'Basic dGVzdF9jbGllbnQ6dGVzdF9zZWNyZXQ=');
		},
	  	dataType: 'json',
	  	type: 'post',
	  	success: function(res) {
			if(res.code == 200){
				localStorage.setItem("token",res.data.token);
				localStorage.setItem("type",res.data.additionalInformation.sysUserInfo.userType);
				localStorage.setItem("username",self.username);
				if(res.data.additionalInformation.sysUserInfo.userType == 1){
					localStorage.setItem("eId",res.data.additionalInformation.sysUserInfo.loginClientVo.enterpriseId);
					localStorage.setItem("id",res.data.additionalInformation.sysUserInfo.loginClientVo.id);
				}else{
					localStorage.setItem("id",res.data.additionalInformation.sysUserInfo.loginStaffVo.id);
				}
				self.$router.push('/Main');
			}else{
				self.open(res.data, false);
			}
			
	  	},
	  	error: function(res) {
	  		self.open("请求失败", false);
	  	}
	  })
      //
    },
    open(content) {
      this.$alert(content, '提示', {
        confirmButtonText: '确定'
      });
    },
    init(){
      //宇宙特效
      "use strict";
      var canvas = document.getElementById('canvas'),
        ctx = canvas.getContext('2d'),
        w = canvas.width = window.innerWidth,
        h = canvas.height = window.innerHeight,
      
        hue = 217,
        stars = [],
        count = 0,
        maxStars = 1300;//星星数量
      
      var canvas2 = document.createElement('canvas'),
        ctx2 = canvas2.getContext('2d');
      canvas2.width = 100;
      canvas2.height = 100;
      var half = canvas2.width / 2,
        gradient2 = ctx2.createRadialGradient(half, half, 0, half, half, half);
      gradient2.addColorStop(0.025, '#CCC');
      gradient2.addColorStop(0.1, 'hsl(' + hue + ', 61%, 33%)');
      gradient2.addColorStop(0.25, 'hsl(' + hue + ', 64%, 6%)');
      gradient2.addColorStop(1, 'transparent');
      
      ctx2.fillStyle = gradient2;
      ctx2.beginPath();
      ctx2.arc(half, half, half, 0, Math.PI * 2);
      ctx2.fill();
      
      // End cache
      
      function random(min, max) {
        if (arguments.length < 2) {
          max = min;
          min = 0;
        }
      
        if (min > max) {
          var hold = max;
          max = min;
          min = hold;
        }
      
        return Math.floor(Math.random() * (max - min + 1)) + min;
      }
      
      function maxOrbit(x, y) {
        var max = Math.max(x, y),
          diameter = Math.round(Math.sqrt(max * max + max * max));
        return diameter / 2;
        //星星移动范围，值越大范围越小，
      }
      
      var Star = function() {
      
        this.orbitRadius = random(maxOrbit(w, h));
        this.radius = random(60, this.orbitRadius) / 8;
        //星星大小
        this.orbitX = w / 2;
        this.orbitY = h / 2;
        this.timePassed = random(0, maxStars);
        this.speed = random(this.orbitRadius) / 1000000;
        //星星移动速度
        this.alpha = random(2, 10) / 10;
      
        count++;
        stars[count] = this;
      }
      
      Star.prototype.draw = function() {
        var x = Math.sin(this.timePassed) * this.orbitRadius + this.orbitX,
          y = Math.cos(this.timePassed) * this.orbitRadius + this.orbitY,
          twinkle = random(10);
      
        if (twinkle === 1 && this.alpha > 0) {
          this.alpha -= 0.05;
        } else if (twinkle === 2 && this.alpha < 1) {
          this.alpha += 0.05;
        }
      
        ctx.globalAlpha = this.alpha;
        ctx.drawImage(canvas2, x - this.radius / 2, y - this.radius / 2, this.radius, this.radius);
        this.timePassed += this.speed;
      }
      
      for (var i = 0; i < maxStars; i++) {
        new Star();
      }
      
      function animation() {
        ctx.globalCompositeOperation = 'source-over';
        ctx.globalAlpha = 0.5; //尾巴
        ctx.fillStyle = 'hsla(' + hue + ', 64%, 6%, 2)';
        ctx.fillRect(0, 0, w, h)
      
        ctx.globalCompositeOperation = 'lighter';
        for (var i = 1, l = stars.length; i < l; i++) {
          stars[i].draw();
        };
      
        window.requestAnimationFrame(animation);
      }
      
      animation();
    }
  }
}
import '@/assets/css/login.css'

</script>
